keeutzkamp



(No Model.) I 3 SheetsSheet 1'. H. G'. O. 81; A. KREUTZKAMP.

ELEVATOR.

No. 392,955. Patented Nov. 13, 1888.

(No Model.)

H. G. 0; & L. A. KREUTZKAMP.

a Sheets-Sheet 2.

ELEVATOR.

Patented Nov. 13, 1888-.

(No Model.) 3 Sheets-Sheet 3.

& A. KREUTZKAMP.

H. G. O.

ELEVATOR.

No. 392,955. Patented Nov. 13, 1888.

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TATES ATENT- HENRY e. OHR. KREUTZKAMP AND LOUIS A. KREUTZKAMP, on NEW YORK, N. Y.

ELEVATO R.

SPECIFICATION forming, part of Letters Patent No.392,955, dated November 13, 1888.

Application filed June 21, 1888. Serial No. 277,819.

To aZZ whom it may concern.-

Be it known that we, HENRY G. OHR. KREUTZKAMP and LoUIs A. KREUTZKAMP, subjects of the Emperor of Germany, and resi- 5 dents of the city of New York, in the county of New York and Stateof New York, have invented a new and useful Improvement in Elevators, of which the following is a specification.

[ Our invention relates to that class of elevators which are used in buildings for carrying passengers up and down, and in which the doors giving admission to the various floors are opened and closed automatically as the r carriage passes to and away from such doors.

The nature of the invention consists in the details of combination and construction, substantially as illustrated in the drawings, hereinafter described, and subsequently pointed out in the claims.

Figure l is a view, partly in perspective and partlyin section, illustratinga part of the well of an elevator and a part of the carriage with our invention attached. Fig. 2 is a plan view, 2 5 partly in section, illustrating the same. Fig. 3 is a detail view illustrating a part of the mechanism which is attached to the carriage for opening the doors of the elevator-well. Fig. 4 illustrates a part of the inside of the elevator-well, the door, and a part of the accompanying mechanism. Fig. 5 is a detail view illustrating the door-opening mechanism in position to open the door. Fig. 6 is a plan View of the same. Fig. 7 is a view of the 3 5 same in such a position that the carriage and its attached mechanism will pass the door without opening it.

A and B designate the body of the well, which commonly is vertical. In this well, propelled by any common and well-known mechanism, runs acarria-ge. Two of the posts of this carriage are designated byF and F and the floor thereof by E. The door which gives ingress to and egress from this carriage, which is designated by D, is formed of strips or bars designated by e and c, crossing each other and arranged so as to form a lazy-tongs. At each alternate crossing of these strips is fastened an upright bar, (designated by (1,) in which are cut slots 01', to allow of the folding up' of the bars e 6'. One of these diagonal bars, e, is

(No model.)

prolonged to form the arm D. This arm is coupled by the connecting-bar I to the bellcrank K. The spring 2' is attached by one end to the arm D and by the other to the side B of the elevator-well. The bell-crank K, which is pivoted to the side B of the elevator-well and oscillates in a vertical plane, is also attached by the link I to the bell-crank G. This bell-crank G is pivoted to a bracket, which is fastened to one of the walls B of the elevator-well. Upon this bell-crank G Works the latch N, which is pivoted at 1 to said bellcrank, and its arm L extends over the longer arm of the bell-crank K at i, as illustrated in Figs. 1 and 4. The other end of this latch N terminates in a bent plate, which is formed so that its two sides will stand one above and one below the end of said bell-crank G. The edges of this bent plate terminate in the curved o wings H and H, which, standing respectively above and below, extend a little beyond the end of thesaid bell-crank G. The spring a is attached by one end to this latch N and by the other to the side B of the elevator-well, so that 7 it will constantly, by its elasticity, tend to hold the end Z of the latch N in its place z" over the longer arm of the bell-crank K, as before described. In the same end of the bell-crank G is pivoted a roller, G, upon a horizontal axis, so that its periphery extends a little be yond the edge of the end of said bell-crank.

Upon the post F of the carriage, in suitable brackets, is mounted the plate 0. This plate is constantly pressed forward by the spring 0, so that when free it will assume the position illustrated in Fig. 5. To hold it in this position the upper end of the spindle o,upon which it is mounted,is flattened, and upon this comes the fork on the end of the lever P. This lever P is pivoted to the frame of the carriage. The spring 8' is attached to the lug s, and, bearing against the lever 1?, tends constantly to hold it in the position illustrated in Figs. 5 and 6; but when the cord 0, which is attached to the 5 plate 0 and passes over the pulleyp, is pulled it causes the fork end of the lever P to rise off of the end of the spindle 0 and the plate 0 to turn a little toward the pulley p. Otherwise this carriage is constructed in the usual and well-known way.

To use the elevator, the carriage is set in end i of said latch, which until now had, by.

retaining the position illustrated in Figs. 1 and 4-,prevented an upward motion of the bell-crank K out of the way of said crank. Then next the plate 0 strikes upon the small roller G in the end of the bell-crank G. This pushes back the roller G and the arm of the bell-crank G, in which it is mounted, and oscillates'the bellcrank G, and it, by means of the connecting-link I, oscillates the bell-crank K. The longer end of the belLcrank K, being connected to the arm D by the bar I, lifts this arm D upward. This causes the whole lazytongs series to close up and so opens the door of the elevator. The mechanism is so arranged that the door will be open the widestjust as the floor E of the carriage is level with the floor of the story to which the gate gives access. The elevator-carriage being stopped at this floor will hold the gate open as long as it remains stationary; but as soon as the carriage moves the plate 0, passing from against the end of thelever G, releases the mechanism. The spring 1', pulling the arm D downward,returns the gate to its extended position, shutting up the entrance to the elevator, and the spring it returns the end i of the latch N to its position over the long arm of the bell-crank K to hold the door in extended position. The same offcctis produced when the carriage moves downward, in which case, however, the plate 0 first strikes on the upper curved surface of the end II of the latch N, and, passing downward after Ward, impinges upon the end of the bell-crank v G. If it be desired to pass a floor without opening the door of the elevator, the operator pulls the cord 0. This, as before explained,

will cause the plate 0 to turn so far that it will not impinge on either the curved surface H or the end of the bell-crank G, and the gate D will remain undisturbed while the carriage is passing. As soon as the cord 0 is released the springs O and will carry back the plate 0 and the lever I? to their original positions.

What we claim as our'invention, and desire to secure by Letters Patent, is

In an elevator-door-operating mechanism, the combination, with the bell-crank lever G, pivoted upon a bracket supported by the wall of the well, the latch N, having ends H and z" and pivoted upon said bell-crank lever G, the link I, connecting the bell-crank lever K and said bell-crank lever G, the bell-crank lever K, pivoted to the wall of said well and connected by the link I to the said lever G and by the bar I tothe arm D, the spring 2, attached to the arm D and the side of said well, the arm D, and the lazy-tongs series 6 c, of which it is a part, and the upright bars d 01, attached thereto and having slots (1 d, of the plate 0, pivoted on the carriage of said elevator, as specified, the spring 0, working upon said plate 0, the lever P, pivoted to the frame of said carriage, constructed with a forked end to embrace the end 0 of the pivot of said plate 0, the spring 8, bearing upon said lever and attached to said carriage, as specified, and the cord 0, attached to the plate 0 and passing over the sheave 10, all substantially as and for the purpose set forth.

In witness whereof we hereunto set our hands in presence of two witnesses.

HENRY G. CHR. KREUTZKAMP. LOUIS A. KR-EUTZKAMP.

Witnesses:

FRED WV. RUBI'EN, O. E. MCDONALD. 

